{"product_id":"allen-bradley-856t-bt8","title":"856T-BT8","description":"\u003ch2\u003eOverview of Allen Bradley 856T-BT8\u003c\/h2\u003e\n\nThe Allen Bradley 856T-BT8 is a 70 mm stack light module designed for industrial signaling and visual indication in demanding manufacturing environments. Part of the 856T Control Tower series from Rockwell Automation, this light module features a steady LED with a yellow polycarbonate lens and operates on 24V AC\/DC power. The unit provides reliable, bright illumination to communicate machine status, production alerts, or safety conditions on the factory floor. Built with a modular design, this one-circuit module integrates seamlessly into custom stack light configurations, allowing engineers to build tailored signaling towers for specific application needs. The 856T-BT8 carries an IP66\/IP67 ingress protection rating, ensuring durability against dust and water ingress in harsh industrial conditions. The LED technology delivers energy-efficient operation with extended service life compared to incandescent alternatives, reducing maintenance requirements and downtime. The black housing provides a professional appearance while the yellow lens offers high visibility for caution or warning states. This light module is fully compatible with other 856T series components including power modules, base adapters, and additional light or sound modules.\n\n\u003ch2\u003eKey Features of Allen Bradley 856T-BT8\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSteady LED Technology:\u003c\/strong\u003e Energy-efficient LED provides consistent, bright illumination with long operational life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24V AC\/DC Operation:\u003c\/strong\u003e Single voltage rating simplifies power supply selection and system design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP66\/IP67 Protection:\u003c\/strong\u003e Sealed enclosure resists dust, moisture, and washdown conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYellow Polycarbonate Lens:\u003c\/strong\u003e High-visibility color for cautionary signals with impact-resistant material\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular Design:\u003c\/strong\u003e Compatible with all 856T Control Tower components for custom configurations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-Circuit Module:\u003c\/strong\u003e Dedicated single-channel control for straightforward wiring and operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specs of 856T-BT8\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e856T-BT8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBulletin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e856T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLight Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e70 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLamp Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLamp Action\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSteady\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLens Color\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLens Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolycarbonate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHousing Color\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24V AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Circuits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOne Circuit Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEnclosure Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP66\/IP67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAustria\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandards Compliance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL 60947-5-1, CSA C22.2 No. 14, CE, c-UL-us, RCM, KCC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplications \/ Use Case\u003c\/h2\u003e\n\nThe Allen Bradley 856T-BT8 light module serves critical signaling functions across automated production lines, machine tools, packaging equipment, and material handling systems. Yellow indication typically signals caution, warning, or intermediate states such as machine warm-up, cycle pauses, or maintenance requests. Manufacturing facilities deploy these modules on CNC machines to indicate tool change requirements, on conveyor systems to show queue status, and on assembly stations to communicate operator intervention needs. The 24V AC\/DC compatibility makes this module suitable for integration with PLC outputs, relay logic, and modern industrial control networks. Process industries use these stack lights for batch status monitoring, while automotive assembly plants employ them for line-side quality alerts. The IP66\/IP67 rating allows installation in food processing areas subject to washdown, pharmaceutical cleanrooms, and outdoor material yards exposed to weather. Maintenance teams benefit from the LED reliability, which reduces bulb replacement frequency and associated downtime. The modular architecture allows facilities to standardize on the 856T platform while customizing individual towers to match specific machine requirements, creating consistent visual language across diverse production equipment.\n\n\u003ch2\u003eRelated Resources\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/\" target=\"_blank\"\u003eLeadTime.ca – Industrial Automation Components \u0026amp; Repair Services\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/collections\/allen-bradley\" target=\"_blank\"\u003eView All Allen Bradley Products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/blogs\/learning-center\/examples-of-industrial-automation-control-systems\" target=\"_blank\"\u003eExamples of Industrial Automation and Control Systems\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/products\/allen-bradley-194e-sy\" target=\"_blank\"\u003eAllen Bradley 194E-SY Disconnect Switch\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/leadtime.ca\/products\/allen-bradley-1609-d600n\" target=\"_blank\"\u003eAllen Bradley 1609-D600N UPS Backup Power Supply\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":47870788174123,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0837\/4671\/7995\/files\/Leadtime_d418d3db-2403-43eb-b356-84e60d1c860a.png?v=1723532066","url":"https:\/\/leadtime.ca\/products\/allen-bradley-856t-bt8","provider":"LEADTIME","version":"1.0","type":"link"}